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| Patents for De Witt H. Bothwell | |||||
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| Number | Date | Patentee | Title | Type | |
| 640,863 | Jan. 09, 1900 | E.M. Birdsall | Elastic Tire | wagon and cart pneumatic tires | |
| 647,643 | Apr. 17, 1900 | E.M. Birdsall | Pneumatic Tire | wagon and cart pneumatic tires | |
| 748,256 | Dec. 29, 1903 | E.M. Birdsall | Elastic Tire for Vehicles | wagon and cart pneumatic tires | |